CN212899556U

CN212899556U - Transmission device

Info

Publication number: CN212899556U
Application number: CN202021238239.XU
Authority: CN
Inventors: 傅峥; 杨鹏; 施佳敏; 付才林
Original assignee: Huizhou BYD Battery Co Ltd
Current assignee: Huizhou BYD Battery Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-04-06
Anticipated expiration: 2030-06-29

Abstract

The utility model provides a transmission, transmission comprises ring gear, a plurality of first gear, a plurality of second gear and sun gear, and wherein, first gear and ring gear meshing, second gear respectively with first ring gear and sun gear meshing, and two liang of meshing between a plurality of second gears and a plurality of first gear. The plurality of second gears and the plurality of first gears are meshed in pairs, so that the first gears and the second gears form a closed-loop layout along the gear ring, the radial force of the gears of the transmission device during working is further balanced, the transmission stability is improved, the service lives of the gears and the transmission device are prolonged, and the practicability is high.

Description

Transmission device

Technical Field

The utility model relates to the technical field of transmission, especially, relate to a transmission.

Background

In the related art, the intermediate gear is arranged between the sun gear and the gear ring for power transmission, and the intermediate gear can be composed of a first gear and a second gear, namely, the sun gear is firstly meshed with the first gear, the first gear is meshed with the second gear, and the second gear is meshed with the gear ring, so that stable transmission is realized.

However, during the meshing process of the first gear and the second gear, the service life is short due to the imbalance of radial force of the gears, and the practicability is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a transmission, transmission comprises ring gear, a plurality of first gear, a plurality of second gear and sun gear, and wherein, first gear and ring gear meshing, second gear respectively with first ring gear and sun gear meshing, and two liang of meshing between a plurality of second gears and a plurality of first gear. The plurality of second gears and the plurality of first gears are meshed in pairs, so that the first gears and the second gears form a closed-loop layout along the gear ring, the radial force of the gears of the transmission device during working is further balanced, the transmission stability is improved, the service lives of the gears and the transmission device are prolonged, and the practicability is high.

According to the utility model discloses transmission, transmission includes: the gear ring, the first gear, the said first gear meshes with said gear ring, the said first gear is multiple; the second gears are meshed with the first gears, the number of the second gears is multiple, and the second gears are meshed with the first gears in pairs; and the sun gear is coaxial with the gear ring, is positioned in the gear ring and is meshed with the second gear.

In some embodiments, the plurality of first gears are evenly distributed in a circular array about the central axis of the ring gear.

In some embodiments, a plurality of the second gears are evenly distributed in a circular array about a central axis of the sun gear.

In some embodiments, the first gear has a pitch circle radius greater than a pitch circle radius of the second gear.

In some embodiments, the transmission further comprises: and the power shaft is fixedly connected with the sun wheel.

In some embodiments, the transmission further comprises: the planet carrier is connected with the first gear and the second gear, is coaxial with the sun gear and can rotate.

In some embodiments, the ring gear is a stationary structure.

In some embodiments, the sun gear is stationary and the ring gear is rotatable about its axis.

In some embodiments, the first gear and the second gear may rotate only about their own axes, and the ring gear may rotate about its own axis.

In some embodiments, a drive shaft is coupled to the ring gear.

The utility model provides a technical scheme's beneficial effect is: the utility model discloses a transmission through setting up to two liang of meshing between a plurality of second gears and a plurality of first gears for first gear and second gear form closed loop overall arrangement along the ring gear, have further balanced transmission at the gear radial force of during operation, have improved driven stability, have prolonged gear and transmission's life, and the practicality is higher.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a transmission according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view B-B of FIG. 1;

fig. 3 is a schematic structural view of a transmission according to another embodiment of the present invention.

Reference numerals:

a transmission 100;

a ring gear 10; a first gear 20; a second gear 30; a sun gear 40; a power shaft 50; a planetary carrier 60; a drive shaft 11.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In the present invention, it should be noted that the terms "set" and "connect" should be understood in a broad sense, and the specific setting manner and the connection manner thereof can be set according to specific conditions, without specific limitation, and for those skilled in the art, the specific meaning of the present invention can be understood according to specific conditions.

A transmission 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 3, in which the transmission 100 is composed of a ring gear 10, a plurality of first gears 20, a plurality of second gears 30, and a sun gear 40, the first gears 20 are engaged with the ring gear 10, the second gears 30 are engaged with the first ring gear 10 and the sun gear 40, respectively, and two of the second gears 30 are engaged with the first gears 20. The plurality of second gears and the plurality of first gears are meshed in pairs, so that the first gears and the second gears form a closed-loop layout along the gear ring, the radial force of the gears of the transmission device during working is further balanced, the transmission stability is improved, the service lives of the gears and the transmission device are prolonged, and the practicability is high.

As shown in fig. 1, according to the transmission 100 of the embodiment of the present invention, the transmission 100 is composed of a ring gear 10, a plurality of first gears 20, a plurality of second gears 30, and a sun gear 40, wherein the first gears 20 are engaged with the ring gear 10, and the first gears 20 are plural; the second gears 30 are meshed with the first gears 20, the number of the second gears 30 is multiple, and the plurality of the second gears 30 are meshed with the plurality of the first gears 20 in pairs; the sun gear 40 is coaxial with the ring gear 10, is located inside the ring gear 10, and meshes with the second gear 30. Specifically, the sun gear 40 is engaged with the second gear 30, the second gear 30 is engaged with the first gear 20 in two-by-two engagement and a closed-loop engagement manner is formed around the sun gear 40, the first gear 20 is engaged with the ring gear 10, wherein the sun gear 40 is not engaged with the first gear 20, and the second gear 30 and the first gear 20 are provided in plurality. It should be noted that: "plurality" is to be understood as 2 or more than 2. The plurality of second gears and the plurality of first gears are meshed in pairs, so that the first gears and the second gears form a closed-loop layout along the gear ring, the radial force of the gears of the transmission device during working is further balanced, the transmission stability is improved, the service lives of the gears and the transmission device are prolonged, and the practicability is high.

In some embodiments, as shown in fig. 1, the plurality of first gears 20 are evenly distributed in a circular array about the central axis of the ring gear 10. Specifically, a plurality of first gears 20 are meshed with the gear ring 10 and are uniformly distributed along the tooth profile of the gear ring 10, and one second gear 30 is meshed between every two first gears 20. By the arrangement, the arrangement of the components in the transfer device 100 is more uniform, and the balance stability is high. Where "plurality" is understood to mean 2 or more than 2.

In some embodiments, as shown in fig. 1, the plurality of second gears 30 are evenly distributed in a circular array about the central axis of the sun gear 40. Specifically, a plurality of second gears 30 are meshed with the sun gear 40 and are evenly distributed along the tooth profile of the sun gear 40, and one first gear 20 is meshed between every two second gears 30. By the arrangement, the arrangement of the components in the transfer device 100 is more uniform, and the balance stability is high. Where "plurality" is understood to mean 2 or more than 2.

In some embodiments, as shown in fig. 1, the first gear 20 has a pitch circle radius that is greater than the pitch circle radius of the second gear 30. Specifically, the sun gear 40, the first gear 20, the second gear 30 and the ring gear 10 on the transmission device 100 are sequentially engaged with each other, wherein the sun gear 40 is responsible for inputting power, the power is transmitted to the ring gear through the second gear 30 and the first gear 20, since the second gear 30 is directly engaged with the sun gear 40, the first gear 20 is directly engaged with the ring gear 10, and the power is transmitted to the first gear 20 through the second gear 30, specifically, a direct part for transmitting the power to the ring gear 10 is the first gear 20, the second gear 30 only plays a role of intermediate transmission and stabilization, and the main role is intermediate stabilization, so in order to save layout space and save materials, the second gear 30 does not need to have too large reference circle radius. The radius of the reference circle of the first gear 20 is larger than that of the second gear 30, so that the layout space and the cost of the transmission device are saved.

In some embodiments, as shown in fig. 2, the transmission 100 further comprises: and the power shaft 50 is fixedly connected with the sun gear 40. A power shaft 50 is provided here to serve as a power input, and the power shaft 50 is adapted to be connected to a motor or other power input mechanism.

In some embodiments, as shown in fig. 2, the transmission 100 further comprises: the carrier 60 is connected to the first gear 20 and the second gear 30, the carrier 60 is coaxial with the sun gear 40, and the carrier 60 is rotatable. Specifically, the power is transmitted to the second gear 30 and the first gear 20 through the sun gear 40, and the first gear 20 drives the planet gear carrier 60 to rotate through the gear ring 10, wherein the gear ring is a fastener and is not rotatable; alternatively, power is transmitted to the planetary carrier 60 through the ring gear 10, wherein the sun gear 40 is a fastener and is not rotatable around itself; alternatively, the power can also be transmitted through the planetary carrier 60, that is, the planetary carrier 60 serves as a power input end and transmits the power to the ring gear 10 or the sun gear 40; the arrangement enables the transmission device 100 to integrally form a planetary gear train transmission, and the transmission device has high transmission efficiency and stable work.

In some embodiments, as shown in FIG. 2, the ring gear 10 is a stationary structure. Specifically, the ring gear 10 is adapted to be fixed to the housing, and when power is transmitted to the second gear 30 and the first gear 20 through the sun gear 40, the first gear 20 rotates the planet carrier 60 through the ring gear 10. It is thereby achieved that the power is smoothly transmitted from the sun gear 40 to the carrier 60, and the carrier 60 is adapted to output the power to the corresponding device or mechanism. Here, by fixing the ring gear, transmission stability and controllability of the gear ratio at the time of power transmission between the sun gear and the carrier are achieved.

In some embodiments, as shown in FIG. 1, sun gear 40 is stationary and ring gear 10 is rotatable about its axis. Specifically, the sun gear 40 is fixed and can not rotate around itself, and power is transmitted to the gear ring 10 through the planet carrier 60, wherein the power transmission is realized through the engagement of the gear ring 10 and the first gear 20, the engagement of the first gear 20 and the second gear 30, and the engagement of the second gear 30 and the sun gear 40; alternatively, the power is transmitted to the carrier 60 through the ring gear 10. It should be noted that: by "stationary" is understood that the component is not rotatable.

In some embodiments, as shown in fig. 1, the first gear and the second gear may only rotate about their own axes, and the ring gear may rotate about its own axis. Specifically, the first gear and the second gear are fixedly provided to a fixed bracket, which is not rotatable, the power of the sun gear 40 is transmitted to the ring gear 10 through the second gear 30 and the first gear 20, and the ring gear 10 outputs the power by rotating itself. Alternatively, the sun gear may be set as the power output end, and the ring gear may be set as the power input end, that is, the ring gear is suitable for connecting with a power input mechanism (such as a motor, etc.), and the power on the ring gear is transmitted to the sun gear 40 through the first gear 20 and the second gear 30, and the sun gear 40 outputs the power.

In some embodiments, as shown in FIG. 3, a drive shaft 11 is attached to the ring gear 10. Specifically, the first gear 20 and the second gear 30 are fixedly arranged on a fixed support, the power on the sun gear is transmitted to the gear ring 10 through the second gear 30 and the first gear 20, the gear ring 10 outputs the power through a transmission shaft 11, and the transmission shaft is suitable for being connected with corresponding equipment or mechanisms needing the power.

According to the utility model discloses transmission 100 through setting up to two liang of meshing between a plurality of second gears 30 and a plurality of first gears 20 for first gear 20 and second gear 30 form the closed loop overall arrangement along ring gear 10, have further balanced transmission 100 and have improved driven stability at the radial power of gear of during operation, have prolonged gear and transmission's life, and the practicality is higher.

Other constructions and operations of the transmission according to embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transmission, characterized in that it comprises:

a gear ring is arranged on the gear ring,

a plurality of first gears engaged with the ring gear;

the second gears are meshed with the first gears, the number of the second gears is multiple, and the second gears are meshed with the first gears in pairs;

and the sun gear is coaxial with the gear ring, is positioned in the gear ring and is meshed with the second gear.

2. The transmission of claim 1, wherein the plurality of first gears are evenly distributed in a circular array about the central axis of the ring gear.

3. The transmission of claim 1, wherein the plurality of second gears are evenly distributed in a circular array about a central axis of the sun gear.

4. The transmission of claim 1, wherein the first gear has a pitch circle radius that is greater than a pitch circle radius of the second gear.

5. The transmission of claim 1, further comprising: and the power shaft is fixedly connected with the sun wheel.

6. The transmission of claim 1, further comprising: the planet carrier is connected with the first gear and the second gear, is coaxial with the sun gear and can rotate.

7. The transmission of claim 6, wherein the ring gear is a stationary structure.

8. The transmission of claim 6, wherein the sun gear is stationary and the ring gear is rotatable about its axis.

9. The transmission of claim 1, wherein the first and second gears are rotatable only about their own axes, and wherein the ring gear is rotatable about its own axis.

10. A transmission according to claim 8 or 9, wherein a drive shaft is connected to the gear ring.